<?php
            $hao = @$_POST['hao'];

            $value = @$_POST['value'];

            $rd = @$_POST['rd'];
            
            if(!empty($hao) and !empty($value)){

                $url = "http://hq.sinajs.cn/list=".$rd.$hao;
                
                    $data = file_get_contents($url);

                    $arr = explode(",",$data);

            }
            echo $arr[3];
?>